Control of zinc plating solutions, determining the optimum concentration of thiourea additive by electrochemical techniques

Mahmud, Z. - Gordillo, G. - Gassa, L. - Ventura D'Alkaine, C.

Editor:

Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales

Fecha:

2016-09

Formato:

application/pdf

Tipo de documento:

info:eu-repo/semantics/report
info:ar-repo/semantics/informe técnico
info:eu-repo/semantics/submittedVersion

Idioma:

spa

Descriptores:

zinc - electroplating - additives - EIS

Descripción:

In this work we have analyzed the effect of thiourea concentration in the acid zinc deposition process. For these purpose, we have used the electrochemical techniques (cathodic voltammetry and Electrochemistry Impedance Spectroscopy, EIS). It allows determining the optimal concentration thiourea additive. In this range, we have obtained better finishes, more refined and decoratives layers. We have found in voltammetric studies that the electroreduction of Zn 2+ in the presence of thiourea is accelerated. The EIS studies has shown the “electrodeposition resistance” decrease in the presence of thiourea. The addition of more thiourea in the solution, in the optimum concentration, the electrodeposition resistance to the electrodeposition process is increased. The main contribution of this research and its scientific contribution is the use of electrochemical techniques for determining the optimal concentration of thiourea additive in the zinc electroplating solution in chloride acid media
Fil: Mahmud, Z. Instituto Nacional de Tecnología Industrial. Procesos Superficiales; Argentina.
Fil: Gordillo, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina.
Fil: Gassa, L. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina.
Fil: Ventura D'Alkaine, C. Universidade Federal de São Carlos; Brasil.

Identificador(es):

http://hdl.handle.net/20.500.12110/technicalreport_n00014

Derechos:

info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar

Descargar texto: technicalreport_n00014.oai

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Cita bibliográfica:

Mahmud, Z. (2016-09). Control of zinc plating solutions, determining the optimum concentration of thiourea additive by electrochemical techniques (info:eu-repo/semantics/report). Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. [consultado: ] Disponible en el Repositorio Digital Institucional de la Universidad de Buenos Aires: <http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=aexreport&cl=CL1&d=technicalreport_n00014_oai>